What Are The Most Efficient Languages?

How many words does it take to express a full thought in your native tongue?

Some experts believe New York is home to as many as 800 languages — ever wonder which one of those is most efficient?  

John McWhorter, a linguistics professor at Columbia University and author of Words on the Move: Why English Won't - and Can't - Sit Still (Like, Literally), discussed how languages are strikingly different in terms of the level of detail they require a speaker to provide in order to put a sentence together.